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Optical recording medium

Assignee: Victor Company of Japan Ltd
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Filing: 1992-02-28
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Granted: —
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Expires: 2012-02-28
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Abstract

Abstract Translated from Japanese (57)【要約】 【目的】 波長が長いスポット光を利用した現在の装置 では、スポット光の径を実質的に小さくして高密度な記 録が可能であり、波長が短いスポット光を利用した将来 の装置でもそのまま使用できる光記録媒体を提供するも のである。 【構成】 スポット光を利用して再生または記録再生す る記録層2と、照射された光の強度に応じて光透過率が 変化する補助層3とを積層した光記録媒体1である。補 助層3を、特定の波長・波長帯域では照射された光の強 度に応じて光透過率が変化し(特性グラフGH)、か つ、前記した特定の波長・波長帯域よりは短い波長・波 長帯域では照射された光の強度にかかわらず光透過率が ほぼ一定(特性グラフGL)である透過率変化材で形成 する。 (57) [Abstract] [Purpose] With the current device that uses spot light with a long wavelength, the diameter of the spot light can be made substantially smaller to enable high-density recording, and a spot light with a short wavelength is used. The present invention provides an optical recording medium that can be used as it is in future devices. [Structure] An optical recording medium 1 in which a recording layer 2 for reproducing or recording / reproducing by using spot light and an auxiliary layer 3 whose light transmittance changes according to the intensity of irradiated light are laminated. The light transmittance of the auxiliary layer 3 changes in accordance with the intensity of the irradiated light in a specific wavelength / wavelength band (characteristic graph GH), and a wavelength / wavelength band shorter than the specific wavelength / wavelength band described above. Then, it is formed of a transmittance changing material having a substantially constant light transmittance (characteristic graph GL) regardless of the intensity of the irradiated light.

Inventors

  • 👤 Ichiro Ueno
  • 👤 一郎 上野

Bibliographic Details

Application Number —
Jurisdiction JP
Data Source google_patents
Last Synchronized 2026-11-01 09:59
CPC Classifications
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